1 Human development is the scientific study of processes of change and stability.  The scientific study of human development began with studies of childhood during the nineteenth century.
verb (used with object), cultivated, cultivating. 1. to prepare and work on (land) in order to raise crops; till. 2. to use a cultivator on. 3. to promote or improve the growth of (a plant, crop, etc.) by labor and attention.
Definition of Cultivation for Happy Plants and Healthy Soil. Cultivation, also known as tilling or soil refinement, is the act of digging into or cutting up an existing soil bed to better prepare it for planting. You might use a tractor, a rototiller or hand tools like a shovel or soil fork. Typically, farmers add amendments when they cultivate soil to boost its nourishment.